Kashima Antlers SÓCIO is a long-running official supporter membership programme of Kashima Antlers.
SÓCIO was introduced in 1998 and combines season-seat membership with a close supporter relationship to the club. Kashima continues to operate SÓCIO alongside its wider fan-club programme and membership initiatives.
The programme is active for the 2026/27 season and forms part of the club’s official organised supporter structure.